Updated on 2022-02-24 GMT+08:00

Querying a Device Information List

Typical Scenario

If an NA needs to view detailed information (such as the manufacturer, model, version, status, and service attributes) of multiple devices that have been registered on the IoT platform, the NA can call this API to obtain the information.

API Function

This API is used by an NA to query detailed information (such as configuration, status and service attributes) of multiple devices based on specified conditions on the IoT platform.

API Description

1
QueryBatchDevicesInfoOutDTO queryBatchDevicesInfo(QueryBatchDevicesInfoInDTO qbdiInDTO, String accessToken) throws NorthApiException

Parameter Description

Parameter

Mandatory or Optional

Type

Location

Description

qbdiInDTO

Mandatory

QueryBatchDevicesInfoInDTO

query

For details, see PostDeviceCommandInDTO2 structure.

accessToken

Mandatory

String

header

If the Periodically Refreshing a Token API is called, set this parameter to null. Otherwise, set this parameter to the accessToken obtained by the Authentication API.

PostDeviceCommandInDTO2 structure

Parameter

Mandatory or Optional

Type

Location

Description

appId

Mandatory

String

query

If the device belongs to the current application, set this parameter to null. Otherwise, set this parameter to the ID of the authorized application.

gatewayId

Optional

String

query

Identifies a gateway.

nodeType

Optional

String

query

Indicates the node type. The value options are ENDPOINT, GATEWAY, and UNKNOW.

deviceType

Optional

String

query

Indicates the device type.

pageNo

Optional

Integer

query

Indicates the page number.

  • If the value is null, pagination query is not performed.
  • If the value is an integer greater than or equal to 0, pagination query is performed.
  • If the value is 0, the first page is queried.

pageSize

Optional

Integer

query

Indicates the number of records on each page. The default value is 1.

status

Optional

String

query

Indicates the device status.

  • ONLINE: The device is online.
  • OFFLINE: The device is offline.
  • ABNORMAL: The device is abnormal.

startTime

Optional

String

query

Indicates the start time. Records with the device registration time later than the start time are queried. The value is in the format of yyyyMMdd'T'HHmmss'Z'. An example value is 20151212T121212Z.

endTime

Optional

String

query

Indicates the end time. Records with the device registration time earlier than the end time are queried. The value is in the format of yyyyMMdd'T'HHmmss'Z'. An example value is 20151212T121212Z.

sort

Optional

String

query

Indicates the sorting mode of queried records.

  • ASC: Records are sorted in ascending order of device registration time.
  • DESC: Records are sorted in descending order of device registration time.

The default value is DESC.

select

Optional

String

query

Indicates the record to be returned. The value can be IMSI.

Response Parameters

QueryBatchDevicesInfoOutDTO structure

Parameter

Type

Description

totalCount

long

Indicates the number of queried records.

pageNo

long

Indicates the page number.

pageSize

long

Indicates the number of records on each page.

devices

List< QuerySingleDeviceInfoOutDTO>

Indicates the device pagination information list. For details, see QuerySingleDeviceInfoOutDTO structure.

QuerySingleDeviceInfoOutDTO structure

Parameter

Type

Description

deviceId

String(256)

Identifies a device.

gatewayId

String(256)

Identifies a gateway. The gateway ID is the same as the device ID if the device is a directly connected device. If the device is a non-directly connected device, the gateway ID is the device ID of the directly connected device (that is, the gateway) with which it associates.

nodeType

Enum

Indicates the node type. The value options are ENDPOINT, GATEWAY, and UNKNOW.

createTime

String(256)

Indicates the time when the device is created. The value is in the format of yyyyMMdd'T'HHmmss'Z'. An example value is 20151212T121212Z.

lastModifiedTime

String(256)

Indicates the last time when the device is modified.

deviceInfo

DeviceInfoQueryDTO

Indicates information about the device. For details, see DeviceInfo structure.

services

List<DeviceService>

Indicates the device service list. For details, see DeviceService structure.

DeviceInfo structure

Parameter

Type

Description

nodeId

String(256)

Identifies a device.

name

String(256)

Indicates the device name.

description

String(2048)

Indicates the device description.

manufacturerId

String(256)

Uniquely identifies a manufacturer.

manufacturerName

String(256)

Indicates the manufacturer name.

mac

String(256)

Indicates the MAC address of the device.

location

String(2048)

Indicates the device location.

deviceType

String(256)

Indicates the device type. The upper camel case is used, for example, MultiSensor, ContactSensor, and CameraGateway.

model

String(256)

Indicates the device model.

In Z-Wave, the format is productType + productId. The value is a hexadecimal value in the format of XXXX-XXXX. Zeros are added if required, for example, 001A-0A12. The format in other protocols is still to be determined.

swVersion

String(256)

Indicates the software version of the device.

In Z-Wave, the format is major version.minor version, for example, 1.1.

fwVersion

String(256)

Indicates the firmware version of the device.

hwVersion

String(256)

Indicates the hardware version of the device.

protocolType

String(256)

Indicates the protocol type used by the device. The value options are CoAP, huaweiM2M, Z-Wave, ONVIF, WPS, Hue, WiFi, J808, Gateway, ZigBee, and LWM2M.

bridgeId

String(256)

Identifies the bridge through which the device accesses the IoT platform.

status

String

Indicates whether the device is online. The value options are ONLINE, OFFLINE, and ABNORMAL.

statusDetail

String(256)

Indicates the device status details. The value of this parameter varies with the value of status. For details, see status and statusDetail structure.

mute

String

Indicates whether the device is in the frozen state. Based on the value of this parameter, the IoT platform determines whether to manage and store data reported by the device.

  • TRUE: The device is in the frozen state.
  • FALSE: The device is not in the frozen state.

supportedSecurity

String

Indicates whether the security mode is supported.

  • TRUE: The security mode is supported.
  • FALSE: The security mode is not supported.

isSecurity

String

Indicates whether the security mode is enabled.

  • TRUE: The security mode is enabled.
  • FALSE: The security mode is disabled.

signalStrength

String(256)

Indicates the signal strength of the device.

sigVersion

String(256)

Indicates the SIG version of the device.

serialNumber

String(256)

Indicates the serial number of the device.

batteryLevel

String(256)

Indicates the battery level of the device.

status and statusDetail

status

statusDetail

OFFLINE

NONE CONFIGURATION_PENDING

ONLINE

NONE COMMUNICATION_ERROR CONFIGURATION_ERROR BRIDGE_OFFLINE FIRMWARE_UPDATING DUTY_CYCLE NOT_ACTIVE

NOTE:

When the device status information is reported to the IoT platform, status and statusDetail must be included. It is recommended that statusDetail be used only for display but not for logical judgment.

DeviceService structure

Parameter

Type

Description

serviceId

String(256)

Identifies a service.

serviceType

String(256)

Indicates the service type.

serviceInfo

ServiceInfo

Indicates the masked device service information. For details, see ServiceInfo structure.

data

ObjectNode(2097152)

Indicates an attribute value pair.

eventTime

String(256)

The value is in the format of yyyyMMdd'T'HHmmss'Z'. An example value is 20151212T121212Z.

ServiceInfo structure

Parameter

Type

Description

muteCmds

List<String>

Indicates the device command list.

Error Codes

HTTP Status Code

Error Code

Error Description

Remarks

400

100216

The application input is invalid.

The application input is invalid.

Recommended handling: Check whether parameters in the API request are correct by referring to the request parameter description.

400

100218

The gatewayId and pageNo cannot be both null.

The gatewayId and pageNo parameters cannot be null at the same time.

Recommended handling: Check whether gatewayId or pageNo is set.

400

100405

The request parameter is invalid.

The request message contains invalid parameters.

Recommended handling: Check whether parameters in the API request are correct by referring to the request parameter description.

403

100203

The application is not existed.

The application does not exist.

Recommended handling:

  • Check whether appId carried in the HTTP request header is correct.
  • Check whether appId in the request path (URL) is correct.

403

100217

The application hasn't been authorized.

The application has not been authorized.

Recommended handling: In scenarios where applications are not authorized, ensure that request parameter appId is null.

403

1010009

app throttle exceed.

The NA calls the API at a frequency that exceeds the flow control threshold (100 calls per minute by default).

Recommended handling: Contact IoT platform maintenance personnel to adjust the flow control threshold or control the API call frequency.

403

1010005

App_key or access_token is invalid.

The access token is invalid.

Recommended handling: Check whether accessToken carried in the API request is correct.

500

100203

The application is not existed.

The application does not exist.

Recommended handling:

  • Check whether appId carried in the HTTP request header is correct.
  • Check whether appId in the request path (URL) is correct.

500

50252

Internal server error.

An internal server error occurs.

Recommended handling: An internal error occurs on the IoT platform. Contact IoT platform maintenance personnel.